Electrical sizing / preliminary busbar screen

Screen a section before the assembly is finalized.

Keep current, temperature, installation boundary and engineering confirmation visible.

Live calculation · retained project context · engineer review

Electrical sizing / preliminary busbar screen

Busbar Size Calculator

Screen a preliminary copper or aluminum busbar section before the assembly receives IEC 61439 thermal and short-circuit review.

Engineer reviewEngine 1.1.0

01 Project inputs02 Screening result03 Review boundaries04 RFQ context

Preliminary section

60 × 5 mm

Screened area254 mm²Screened capacity295 A

Engineer review

60 × 5 mm × 1 254 mm² required screening area

Cause and next action

Next: Confirm final ampacity, temperature rise, enclosure ventilation and short-circuit duty to the project design.

Engineer review

40 °C Tool envelope ≤ 55 °C

Cause and next action

Next: Use project-specific thermal verification above the tool envelope.

Engineer review

Enclosed assembly IEC 61439 review required

Cause and next action

Next: Confirm busbar spacing, supports, joints, clearance and enclosure construction.

Calculation breakdown

Required screening area = design current ÷ material screening density ÷ ambient factor ÷ installation factor ÷ parallel bars.